Mitsubishi Electric Mr.Slim PUZ-HA42NKA Service Manual page 60

<Display function of inspection for outdoor unit>
[Display]
(1)Normal condition
Unit condition
When the power is turned on
When unit stops
When compressor is warming up
When unit operates
(2)Abnormal condition
Indication
Outdoor controller board
LED1 (Green) LED2 (Red)
1 blinking 2 blinking
Connector(63L) is open.
Connector(63H) is open.
2 connectors are open.
Miswiring of indoor/outdoor unit conne-
2 blinking 1 blinking
cting wire, excessive number of indoor
units (4 units or more)
Miswiring of indoor/outdoor unit co-
nnecting wire (converse wiring or di-
sconnection)
Startup time over
Indoor/outdoor unit communication error
2 blinking
(signal receiving error) is detected by in-
door unit.
Indoor/outdoor unit communication error
(transmitting error) is detected by indoor
unit.
Indoor/outdoor unit communication error
(signal receiving error) is detected by
outdoor unit.
Indoor/outdoor unit communication error
(transmitting error) is detected by outdoor
unit.
3 blinking
Remote controller signal receiving
error is detected by remote controller.
Remote controller transmitting error
is detected by remote controller.
Remote controller signal receiving
error is detected by indoor unit.
Remote controller transmitting error
is detected by indoor unit.
4 blinking
Check code is not defined.
5 blinking Serial communication error
<Communication between outdoor
controller board and outdoor power
board>
<Communication between outdoor
controller board and M-NET P.C. board>
Communication error of M-NET
system
*Check code displayed on remote controller
**Refer to service manual for indoor unit.
OCH567
Outdoor controller board
LED1 (Green) LED2 (Red)
Lighted Lighted
Lighted Not lighted
Lighted Not lighted
Lighted Lighted
Check
Contents
code*
1 Check if connector (63L or 63H) on the outdoor controller
F3
F5
2 Check continuity of pressure switch (63L or 63H) by tester.
F9
—
1 Check if indoor/outdoor connecting wire is connected correctly.
2 Check if 4 or more indoor units are connected to outdoor unit.
3 Check if noise entered into indoor/outdoor connecting wire
—
4 Re-check error by turning off power, and on again.
—
1 Check if indoor/outdoor connecting wire is connected correctly.
E6
2 Check if noise entered into indoor/outdoor connecting wire or
E7
3 Check if noise entered into indoor/outdoor controller board.
4 Re-check error by turning off power, and on again.
—
—
1 Check if connecting wire of indoor unit or remote controller
E0
2 Check if noise entered into transmission wire of remote
E3
3 Re-check error by turning off power, and on again.
E4
E5
1 Check if remote controller is MA remote controller(PAR-21MAA).
EF
2 Check if noise entered into transmission wire of remote controller.
3 Check if noise entered into indoor/outdoor connecting wire.
4 Re-check error by turning off power, and on again.
1 Check if connector (CN4) on outdoor controller board and
Ed
2 Check if there is poor connection of connector on outdoor
3 Check M-NET communication signal.
A0~A8
A-Control Service Tool
Check code
00, etc.
08, etc.
C5, H7, etc.
Error
Inspection method
board is not disconnected.
or power supply.
power supply.
is connected correctly.
controller.
outdoor power board is not disconnected.
controller board(CNMNT and CNVMNT).
Indication of the display
Alternately blinking display
Operation mode
Detailed
reference
page
P.25
P.26
P.26
P.26
(EA)
P.26
(Eb)
P.26
(EC)
**
**
P.32
(E8)
P.32
(E9)
P.31
P.32
P.31
P.32
P.32
P.33
P.35~
P.38